scheng v0.1.0

GPU-accelerated video synthesis SDK for Rust. Build real-time shader instruments
with full professional I/O.

Core Engine

• wgpu Metal/DX12/Vulkan render pipeline with hot-reload GLSL shaders
• Rgba16Float internal render targets (16-bit precision, no banding)
• MSAA anti-aliasing (--msaa 4)
• 4K resolution support
• bt.709 colorspace throughout
• Custom shader uniforms (u_*) wired to MIDI/OSC via NodeConfig
• Graph-based node system with multi-input/output routing

Inputs

• MIDI CC → uniform parameters (real-time, smoothed)
• OSC → uniform parameters
• Webcam (nokhwa, MJPEG/YUYV fallback)
• Video file playback (ffmpeg-next 8, looping, BICUBIC scaling)
• NDI receive (grafton-ndi 0.11)
• Syphon receive (ObjC Metal bridge, macOS)
• RTMP/RTSP/SRT live stream receive (ffmpeg subprocess)

Outputs

• Syphon (Metal texture sharing, macOS)
• NDI (NewTek SDK)
• Spout (Windows, stub)
• RTMP stream (→ OBS, Twitch, YouTube, nginx-rtmp)
• RTSP stream (→ mediamtx, VLC)
• File recording (H.264/ProRes via ffmpeg pipe)

Templates

• scheng-gradient — minimal hot-reload shader starter
• scheng-mixer — two Syphon inputs, MIDI T-bar crossfade
• scheng-processor — webcam + solarize effect, MIDI controls
• scheng-video-mixer — two video files, MIDI T-bar crossfade

Quality

• Rgba16Float pipeline eliminates quantization error across processing passes
• bt.709 colorspace tags on all FFmpeg output
• BGRA→RGBA swap for Syphon Metal textures
• Persistent SyphonServerDirectory (no re-entrancy crashes)
• Zero warnings across workspace

Requirements

• Rust 1.75+
• macOS (Metal), Windows (DX12), Linux (Vulkan)
• ffmpeg in PATH for video/stream features
• Syphon.framework in vendor/ for Syphon I/O (macOS)
• NDI SDK installed for NDI I/O

New GUI Editor

gui-v1

added new GUI/editor system